scholarly journals Implementasi metode NIOSH dan analisa QEC pada alat potong ranting

Author(s):  
Zufri Hasrudy Siregar ◽  
Margie Subahagia Ningsih

This research is the design of  new technology which is  simple by engineering hydraulic system and  principles of hand grip which functions  as adjustable twig clipper  that is ergonomic, with the normal length of 1.5 meters,  maximum length of 3 meters., weight of 2.8 kg,  the length of grip range  of 94 mm and handlebar diameter of 52 mm. This research used the method of ergonomic analysis to identify the suitability of the device with human by taking 95 percentile. From the findings, the hand grip diameter obtained is 54, 29 mm while the hand palm width is 97.87 mm, and the maximum pressure required to cut the branch is 522.29 kg/cm2 with a diameter of 1 cm that is for the type of clove twig. In addition, from the NIOSH analysis, it is obtained that the required weight is 4.89 Kg while from the QEC method, the highest score percentage is 47.62. This means that it is necessary to improve the equipment in the future. In order to prevent tiredness, the suggested working duration is 8.40 minutes and 7.14 minutes for resting time. From the results of research, it can be concluded that this device still needs to be improved in the future. In addition, the usage time is quite short and it is only functioned for harvesting clove and harvesting other similar with maximum diameter of 1 cm.

2022 ◽  
pp. 129-155
Author(s):  
Graham Matthews ◽  
John Tunstall

Abstract This chapter focuses on the crop protection and pest management of cotton crops in Southern Africa (Eswatini, Zimbabwe, Zambia, Malawi, Mozambique, and Angola). It discusses how new technology will bring major changes in how cotton is grown in the future.


2030 ◽  
2010 ◽  
Author(s):  
Rutger van Santen ◽  
Djan Khoe ◽  
Bram Vermeer

We have some serious work to do. Far too many people lead miserable lives because they lack the most basic necessities to deal with hunger, thirst, shelter, disease, or disability. In addition, the prosperity currently enjoyed by many of us may not be taken for granted in the future. The experts in this book have identified a range of breakthroughs that are urgently required if we are to improve the fate of humanity in the decades ahead and look to the future with greater confidence. There will be some hard choices, and some lines of research will probably need to be pursued at the expense of others. Industry should change and adopt new strategies. And we as a society should accept and foster that change. The evolution of technology, industry, and society is a complex process full of feedback mechanisms and surprises. It’s vital that we understand the most promising ways to facilitate the necessary changes of direction. The technologies proposed in this book aren’t straightforward; otherwise, they would have been identified much sooner. The days when you could produce a brilliant invention in your garden shed have largely gone. Anyone wishing to improve the current state of technology needs a solid pedigree and will need to labor long and hard with a group of dedicated colleagues, in many cases relying on extremely expensive equipment. Breakthroughs demand the stamina, laborious testing, and inspiration of countless scientists and engineers. Hundreds of thousands of design hours can go into a new microchip, car, or power-generation technique. Developing new technology is a complex process. That complexity is exemplified by the development of the laser. Einstein predicted the principle of stimulated emission on which lasers are based long before World War II. But it was many more decades before working lasers were created and longer still before they were put to practical use. Once we had them, however, we found we could use them in new scientific instruments that opened up fresh areas of research.


2010 ◽  
Vol 2 (4) ◽  
Author(s):  
Stéphane Kieger

Virtual worlds represent a new market with a distinct economy andmany individuals are trying to exploit this very new technology in thesearch of profitable opportunities. The current paper proposes to studyentrepreneurship in the Massively Multiplayer Online Role-PlayingGames (MMORPG) Second Life® and Entropia Universe® in whichmonetary trades are possible. A survey was proposed to the community of players of both games, and from a sample of 244 players, nineteenentrepreneurs were contacted for a second survey. The traits of theentrepreneurs were compared to those of the players andentrepreneurship was observed in Second Life® and Entropia Universe®.  In fact, all the necessary conditions are present for entrepreneurship: a new technology giving new sources of revenues, an entrepreneur willing to invest money in order to increase his wealth, and a market with an economy well understood. The different entrepreneurs have developed successful ventures in several markets, and they had well defined the strategy they wanted to adopt. They have examined the different markets in which they have entered although they did not use all the tools known in the marketing fields. Further, some steps in the process of creation of the venture may not be important and some may be done relatively swiftly, thus the venture creation in MMORPG may be relatively easy. In conclusion, the venture creation may be relatively undemanding in virtual worlds, and this opens new possibilities for the future.


2013 ◽  
Vol 2 (2) ◽  
Author(s):  
Anneli Hoel Fjærli ◽  
Ida Haugland

The modern world is continuously engaged in a racing processes aimed towards building a favourable future society. In this development, the apparent tools seem to be related to theoretical thought, new technology, avant-garde approaches and innovation. The bodily focus and the societal micro level processes are often left behind in this race. Though, in our aspiration towards urban development and the future society, we should not forget that the bodily functions and the possibilities that these give, represent one of the most fundamental and basic tools we have. This article would like to form an argument carrying out the seeming advantage of bringing in not just technological and theoretic avant-garde to the term of innovation and development, but to invite the whole body into the forming of the future, thereby seeing the term innovation from a material perspective. As the art field today is more often approaching subject matters that are primarily societal, we would like to introduce the potential of a mutual approach from the other end, seeing the art field as a central part in the creation of engagement and progress that can instigate another form of efficiency and present an expanded understanding of what innovative activity can be, and how it can be perceived and comprehended. We would like to debate an art form that takes the bodily, active and relational focus and its social context as a base and starting point on the road towards societal consciousness and potential development. Looking at the example of the art project «The Collectivity Project», this article takes it’s starting point in the following question; How can applied art projects in connection to social contexts, like The Collectivity Project, show the art field and the bodily sensuousness as a tool in the forming of values pointing towards an alternative way of thinking societal consciousness and development?


1994 ◽  
Vol 30 (2) ◽  
pp. 1-12 ◽  
Author(s):  
M. B. Beck ◽  
J. Chen ◽  
A. J. Saul ◽  
D. Butler

The process of innovation has been described as a function of the forces of technology ‘push’ and, in the present study, environmental ‘pull’. In order to assess what form of urban drainage system might be desirable by the middle of the next Century, speculation on the possible evolution of the associated technology, U1d the forms of the ‘ultimate’ standards of ‘environmental quality’ is necessary. Interwoven with these speculations is also the necessity to think through the implications of the scenarios for possible climate change and changes in the social fabric of cities in the future. The paper takes a first step in the direction of such speculation. It is noted that operational definitions of a ‘sustainable’ city, or of ‘environmental quality’ (beyond sustainability), are lacking. Cities, like organisms, are associated with !lows of material and energy. Within the broad context of the global cycles of certain principal materials, and in the absence of a good knowledge of the forces of environmental ‘pull’, the ways in which an urban drainage system of the future might introduce minimal distortion of these ‘natural’ material cycles are explored. Specifically, the cycles of C-, N-, P- and S-bearing materials, together with those of heavy metals, synthetic organic chemicals and pathogens, are examined. These represent the principal categories of pollution associated with the activities of a city. Much of the analysis points towards the desirability of returning the non-aqueous output fluxes of the urban drainage system to the land, as opposed to the aquatic environment This is hardly surprising given the history of social developments (in moving from a rural to urban society). The challenge is to combine the more specific insights from this study of a hypothetical ideal with the obvious practical constraints of existing infrastructures of sewer networks and wastewater treatment facilities.


2013 ◽  
Vol 584 ◽  
pp. 9-14
Author(s):  
Hong Ze Yang ◽  
Bo Li ◽  
Ya Nan Wu ◽  
Bin Li

The ergonomic design of forest fire helmet is closely related to its safety performance. In order to improve the performance of forest fire helmet, three representative forest fire helmets are evaluated from the shape, material, safety, comfort and other aspects and analyzed according to the firemens usage condition. Some suggestions for helmet design, such as using suspension system, installing height adjuster, using adjustable goggles with peripheral knobs and decomposition using helmets, goggles and masks, are proposed, which provide a referential technical guidance for the design of forest fire helmets in the future.


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